Power supply protection device applied to vehicle-mounted electrical equipment

Abstract

The invention discloses a power supply protection device applied to vehicle-mounted electrical equipment. The power supply protection device comprises a power supply circuit unit, a power supply voltage sampling unit, a computing unit, a control unit and a reminding unit that are connected through circuits, wherein the power supply circuit unit is used for providing corresponding electric power to other units and the vehicle-mounted electrical equipment; the power supply voltage sampling unit is used for sampling a power supply voltage and converting the power supply voltage into a sampling voltage capable of being recognized; the computing unit is used for carrying out simulation or logic analysis and computation on the sampling voltage; the control unit is used for determining whether a main loop is connected or disconnected according to a result of the computing unit; and the reminding unit is used for sending corresponding sound or / and light. The power supply protection device applied to the vehicle-mounted electrical equipment can be used for monitoring a power supply in real time and carrying out real-time judgment, and ensures that a user can decide whether the vehicle-mounted electrical equipment is used according to the condition of the power supply and forcedly cut off other vehicle-mounted electrical equipment when the electric quantity of the power supply is overlow. When the power supply protection device is applied to a vehicle, the condition of incapability of starting vehicles and the like due to overlow electric quantity of the power supply is avoided.

Description

technical field [0001] The invention relates to a power protection device applied to vehicle electric appliances. Background technique [0002] With the economic development of our country, all kinds of cars have been popularized in every aspect of people's life. Traveling by car has become a habit of people. With the popularity of automobiles, various electrical appliances have gradually entered the automotive field. [0003] At present, the car electrical appliances on the market use the car battery as the power source, and are directly connected to the car power supply through the use of a dedicated car interface. [0004] The increase in electrical appliances has brought a lot of convenience to people's life and travel, but it has also brought more burdens to automobile power supplies and hidden safety hazards. When the power of the car power supply drops and electrical appliances—especially high-power electrical appliances are still in use, not only will it cause dam...

AI Technical Summary

Problems solved by technology

[0004] The increase of electrical appliances has brought a lot of convenience to people's life and travel, but it has also brought more burdens to the car power supply and also brought safety hazards

When the power of the car power supply drops and electrical appliances—especially high-power electrical appliances are still in use, not only will it cause damage to the car power supply, but in severe cases, the car will fail to ignite or break down.

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